5. A violin is played with an initial intensity  Ii  changing to a final intensity If. If If = 5 Ii , what is the difference in sound intensity level (dB) between these two extremes?
(A) 10(log5)
(B) 5
(C) 10
(D) 10(log2)
(E) 2(log5)

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統計： A(48), B(1), C(1), D(1), E(0) #2336705